Metallurgic gas-furnace



2 Sheets-Sheet 1.

(No Modal.)

J. s. SEIBERT.

METALLURGIG GAS PURNAGE.

Pan-.emedl Apr. 14, 1885.

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2 Sheets-Sheet 2.

(No ModeL) J. s. SBIBBRT. METALLURGIG GAS FURNAGE. No. 315,846. Patented Apr. 14, 1885.

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JOSEPH S. SEIBERT, OF PULLMAN, ILLINOIS.

METALLURGIC GAS-FURNACE.

CATIGN Application filed September 6, 1884.

To @ZZ whom it may concern;`

Be it known that I, JOSEPH S. SEIBERT, a citizen of the United States, residing at Pullman, in the county of Oook and State of Illi nois, have invented certain new and useful Improvements in lifetallurgic Gas-Furnaces for Puddling, Heating, and Treating Iron, of which the following is a specification, refer ence being had tothe accompanying drawings, in which- Figure 1 is a vertical longitudinal section of my improved furnace on the line n n of Fig. 2. Fig. 2 is a front elevation of the gasproducer and gas-chamber. Fig.,3 is a vertical cross-section through the gas-producer and gas-chamber on line a; a; of Fig. 1. Fig. 4 is a horizontal section through the gas-pro ducer, combustion-chamber, and gas-chamber on line a z of Fig. l. Fig. 5 is a vertical crosssection through the furnace and furnace-bed on line y y of Fig. 1, showing the port-s of the gas and air flues coming from the gas-chamber and hotair grate.

Like letters refer to like they occur.

My invention relates to improvements in the construction of that class of furnaces known as metallurgie gas-furnaces; and it consists in arranging the gas and air iiues of the furnace so that it can either be used as a gasfurnace proper or a direct-draft furnace, as will be more fully hereinafter specified, and specifically pointed out in the claims.

To accomplish the above ends my invention is illustrated in details of construction hereinafter more specifically set forth.

I will now proceed to describe my invention so that others skilled in the art and man ufacture to which it appertains may apply the same.

In the annexed drawings, A A A represent the gas-producer, over which spans the arch D, provided with flues c a c a ac. Said iiues open alternately on the side of arch D, at point-s h and h respectively, admitting the gas and leading it down through one side wall of the producer to a small chamber, b, from where it passes to the main gas-chamber C. The gas-producer A is provided with gratebars z', resting over the ash-pit E, which latter is provided with doors K, having spy-glasses s and poke-holes p, as shown in Fig. 2 of the parte `wherever forming part of Letters Patent No. 315,846, dated April 14, 1885.

(No model.)

annexed drawings. The extension F of ashpit E is again covered by means of doors or plates m at the level of the ground.

To operate the gas-produoer, steam is introduced under the gratcbars t' through a steanr blast pipe, Z, which after entering the ash-pit E forms a square frame, j, near the wall thereof, and contains on the upper side numerous small tubes or injectors wherethrough the steam is forced betweenl the grate-barsi into the burning fuel. Thus the production of gas is greatly increased.

The front wall of the gasproducer A is provided with a working-door, K', having a spyhole, s', and two poke-holes, p. A hopper, H, with the bottom end extending through the wall, is placed on each side of door K', said hopper H being provided with a sliding bottom nearest to the wall, and a hinged cover, g.

In charging the producer with fuel the hopper H is filled with coal and closed with cover q Y The bottom of the hopper is then raised by means of lever r, allowing the fuel to slide on an inclined plane through the opening in the wall onto the gratebars i.

Directly under the hopper H poke-holes p are placed for the purpose of facilitating the even spreading of the fuel over the dre-grate.

The rear wall of gas-producer A, dividing it from the combustion chamber B, has an arch-shaped opening, O, communicating thus with the said chamber B. Said wall, and on each side of the opening O, contains a number of air-fines, c e e, leading from the top of the furnace to the fire-place of the hot-air producer B. These iiues are closed from the top with cover f, operated with levers from the side of the furnace.

Behind the combustion-chamber B is located the gas-receptacle y, to which gas is admitted from the gas-chamber O through the damper d, as shown in Figs. l and 4. Hot-air flues t pass from the combustion-chamber B into the furnace L and alongside the gasflues g, in the manner shown in Fig. 5.A

The furnace L contains the usual furnacebed, M, and is provided at one side with three or more working-doors, u u u. The gas, after rendering its heat and passing through the furnace, is let off through the neck T, provided with damper W, into the stack.

The gas-chamber() is provided with anim- IOO proved soot-screen, I, which is placed before l the damper d, and can be either pushed across the gas-chamberOor removedtoits receptaclev R, as required. Gas-chambers bl and C are each provided at their front ends with doors to enable the removal of soot.

In operating my furnace as a gas-furnace proper the opening O between the gasproducerA and the combustion-chamber B should be closed and the damper d in the gas-cham ber C opened, thus allowing the gas to pass through the soot-screenIto the gas-receptacle g, from where it enters into the furnace L, igniting and mixing therein with the hot air coming from chamber B through the hot-air ports t. During this operation damper f over the air-flues c e e should be left open.

A direct-draft furnace is formed by closing damper d in gas-chamber C` and allowing the gas from the producer A to pass through the opening O into the chamber B, igniting therein and passing with the hot air through the hotair ports t only into the furnace L. During this operation damper f over the airiiues e e e should be closed.

A further advantage in operating my furnace consists in the continuous production of heat, at the same time allowing the burning out of the soot in the gas-chambers b and Cby opening the doors K K, igniting the gas in the producer A at once, and thus entering the furnace L as a iiame. The damper f being closed and the exit at the neck T of the fur nace L being regulated by means of damper W, the heat is retained and utilized to advantage in the furnace. I also point out the easy access to the gas and hot-air lues g and t, in repairing the same, from the side Iof the hotair ygrate without disturbing any brick-work in the side wall or arches of the furnace.

Having thus described my invention and its operation, what I claim, and desireto secure by Letters Patent, is-

3. The combination of the gas producing l chamber A, the arch D, provided with flues a, said flues opening alternately in the sides of the arch, and the chambers bC, provided with doors for the removal of soot, substantially as described, and for the purposes set forth.

4. The combination of the gasproducing chamber A, the arch D, provided with ues a, the chambers b and C, and screen I, located in receptacle B, whereby the screen may be placed across the chamber C or retained .in the receptacle, as specified.

5. The combination of the gasproducing chamber A, arch D, provided with flues a, the chambers b'Odamper d, and gas-receptacle g, substantially as described, andfor the purposes set forth.

6. The combination .of `the gas-producing chamber A, arch D, provided with flues a, the rear flues, e, having cover f, thechambersb C, gas-receptacle g, furnace L, and combustionchamber B, having ports t, substantially as described, and for the purposes set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH S. SEIBERT.

Witnesses:

FRED. STIcH, HUGH ONEIL. 

